Rotary machine



' Q 1,652,914 49 927 E. w. GOESER ROTARY MACHINE I Filed y'v. 1925 4Sheets-Sheet 1 W145 702 ZZW/N W 60552,

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E. w. GoEsER ROTARY MACHINE Filed July 7, 192a 4 Sheets-Sheet 2 and AWWI/I mmsm E. W. GOESER ROTARY MACHINE 4 snee ns-sheet 5 Filed July 7,1925 mm If Q 1 E. w. GOESER v ROTARY MACHINE Filed July '7. 1925 4Sheets-Sheet 50mm 14 (705.22, 5v

A TTOQ NEY.

Patented Jan." 4, 1927.

A UNITED STATES 1,612,914 PATENT OFFICE.

EDWIN w. GOESER, or nos ANGELES, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN-l MEN'IS, TO EMSCO DERRICK & EQUIPMENT COMPANY, or nos iANG-ELES, GALI-roRNIA, .A CORPORATION OF .cALIFoRNIA.

ROTARY MACHINE. 1

Application filed July 7,

My invention relates to rotary machines of the character employed indrilling 011 wells by the so-called rotary system.

In the oil well drilling industry a rotary machine is placed on thefloor of the derrick of a well. A drill pipe extends through a table ofthe rotary machine and carries a bit at its lower end. In the presentcommon form of rotary machine the table has a be vel gear which isdriven by a bevel pinion mounted on a pinion shaft which is rotatable inbearings of the rotary machine. A sprocket is secured to the pinionshaft, which sprocket is driven from a draw works of'the derrick bymeans of a sprocket and chain arrangement. The rotary table rotates thedrill pipe and the bit, the bit sinking the well.

A rotary machine is subjected to severe strains when in operation and itmust therefore be very ruggedso that such strains may be endured. Thesegreat strainstend to disalign the bearings and the pinion shaft, and tothrow out of alignment and damage the associated parts of the machine.

It is an object of my invention to provide a rotary machine havingpinion shaft bearings which cannot be thrown out of alignment with eachother by strains placed upon the rotary machine during its operation.

Another object of my invention is to provide a rotary machine having aunitary bearing supporting member for supporting pinion shaft bearings.

A. further object of my invention is to provide a rotary machine havingnovel means of supporting and securing the bearing supporting member ofmy invention in place.

An additional object of my invention is to provide a means for lockingthe pinion shaft of the rotary table from rotation.

Rotary machines are preferably each situated at the center of thederrick floor and the draw works are situated at one side of the derrickfloor. The chain which drives the pinion shaft sprocket extends from thedraw works across the derrick floor to the rotary machine, the chaingenerally having a guard to prevent a workman from being. caughttherein. It is highly desirable to have this chain close to the derrickfloor so that workmen may step over it when cross- HEISSUED 1925. SerialNo. 42,009.

ing thelfioor and not have to walk around to the other side of therotarymachine.

It is a still further object of my invention to provide a rotary machinehaving apinion shaft sprocket which is situated close to the floor ofthe derrick so that the chain by which it is-driven may also bepositioned very low.

Other objects and advantages of my invention will be made evidenthereinafter.

Referring to the four sheets of drawings in which I illustrate myinvention,

Fig. 1 is a plan view of rotary machine embodying the, features of myinvention.

Fig. 2 is an elevational view of the rotary machine shown in Fig. 1.

Fig. 3 is a fragmentary longitudinal section taken through the rotarymachine as indicated by the line 33 of Fig. 1.

Fig. 4 is a cross section taken on the line 4-4 of Fig. 3.

Fig. 5 is a fragmentary cross section taken on theline 55 of Fig. 3.

With reference to Figs. 1 and 2 of the drawings the rotary machine of myinvention has supporting timbers 11011 which a ba e 12 is secured. Thebase 12 supports a rotary table 13 which is free to turn in the base 12and is held in place by a hold-down ring 14 secured'to the base 12 bybolts 15.

A block 17 is supported on the timbers 11 adjacent to the base 12. Faces18 of-flanges 19 of the block 17 rest on upper faces 20 of the timbers11. and vertical faces 22 of lips 23 of the block 17 engage innervertical faces 24 of the timbers 11. Bolts 26 extend through the timbers11 and the flanges 19 for securing the block 17 rigidly in place. Theflanges 19 ofthe block 17 are connected together by an arcuated wall 27having fianges 28 extending downwardly therefrom from its opposite ends.

The block 17' supports a bearing supporting member 30. Horizontal faces31 of oppositely arranged feet 3201? the bearing supporting member 30rest on horizontal shoulders 33 provided by the block 17. Outer verticalfaces 34 of the feet 32 engage vertical confining walls 35 of the block17. Bolts 36 pass through the block 17 and through the feet 32 forsecuring the bearing member-30 in place,-there being bosses 37 formed onthe upper faces of the feet 32 through which the bolts 36 extend. Withing 40 and at the outer end of the bearing reference to Fig. 3, at theinner end of the bearing member 30 is an inner bearing hous- 44havecylindrical openings 45, inside of which 0 lindrical enlargements .47 ofthe pinion s aft 42 rest. The inner end of the inner bearing housing 40is closed by an inner plate 48 which is secured thereto by bolts 49. Theinner plate 48 has a cylindrical opening 50 through which the pinionshaft 42 extends. The outer bearing housing 41 has its outer end closedby an outer plate 53 which is secured; in place by bolts 54. The outerplate 53 has a cylindrical opening 58 through which the pinion shaft 42extends.

Placed .in the inner and outer bearing housings 40 and 41 between theend rings 44 and the plates 48 and 53 are bearing sleeves 55 which haveouter faces 56 adapted to engage the internal cylindrical faces 43 ofthese bearing housings. The portions of the pinion shaft 42 restinginside the housings 40 and 41 have journal sleeves 57 placed thereupon.Between the journal sleeves 57 and the bearing sleeves 55, rollerbearings 59 are placed, as clearly shown in Figs. 3 and 5. Annularplates 61 are placed in the housings 40 and 41 between the journal andbearing sleeves 57 and 55 adjacent to the inner and outer plates 48 and53. The annular lates 61 are provided to restrain the roller Bearings 59from axial movement.

Annularoil channels 63 are formed in the internal cylindrical faces 43of the bearing housings 40 and 41. Lubricating oil is sup plied to theseoil channels by oil cups 64 which are connected to these channels 63through the housings 40 and 41, as indicated at 65 in Fig. 5. The oilpasses from the oil channel 63 to the roller bearings 59 throughopenings 67 formed in the bearing sleeves 55.

A pinion 70 is rigidly secured at the inner end of the pinion shaft 42by a key 71. The pinion 70 engages a bevel gear 73 of the rotary table13, the rotary table being driven by the-pinion 70. At the outer end ofthe shaft. 42 there is placed a pinion shaft sprocket 75 which isrigidly secured in place by a key 76. The pinion sprocket 75 is adaptedto receive a sprocket chain (not shown) by means of which the pinionshaft 42 is rotatably driven. 7

As clearly shown in Figs. 3 and 4, there is a space 77 provided betweenthe innerv and outer bearing housings 40 and 41. A split collar 79 issecured upon the shaft 42 in this space 77. As shown clearly in Fig. 4,the split collar 79 is.,composed of halves 80 which are secured togetherby bolts 81. A key 82 renders the collar 79 nonrotatabl e on the shaft42. The collar 7 9 is provided with lugs or projections 85 which areseparated by grooves 86 and which have opposing shoulders 87. Dogs 90are pivoted between lugs 91 of the block 17 on shafts 92 supported bthese lugs 91. The dogs 90, as clearly s ownv in Fig; 4, are swingablein a plane at right angles to the axis of rotation of the shaft 42 andma be swung into such a position that end aces 94 thereof engageopposite shoulders 87 of aprojection 85. By reason of such an engagementthe shaft 42 is positively locked against rotation. When the rotarytable is in operation, the dogs 90 are swung outwardly from engagementwith the collar 79. I

,In the operation of the rotary table the pinion sprocket 75 is drivenby asprocket chain which extends from the draw works of the derrick. Aspreviously mentioned, the pinion shaft sprocket 75 rotates the pinionshaft 42, which in turn revolves the pinion 70. The pinion 70 by reasonof its engagement with the bevel gear 73 of the table 13 rotates thetable. As previously mentioned, the rotary machine is generally situatedat the center of the floor of the der- 'rlck, whereas the draw works isgenerally situated to one side of the floor of the derrick.Consequently, the sprocket chain must extend across the floor of thederrick. It is veny desirable to have the sprocket chain quite close tothe floor so that workmen may step over the chain, thus savingconsiderable time by not having to walk around the rotary machine to getto the opposite side of the derrick. One feature of my invention is toprovide a rotary machine havinga pinion shaft sprocket which is situatedclose to the derrick floor. 'As clearly shown in the drawings, thepinion shaft sprocket. 75 is placed on the extending end of the shaft42. The chain passing over the sprocket 75 is extended to one side ofthe bearing and III the timbers of the rotary machine, and for i thisreason the pinion shaft 42 can be quite low as it is not necessary toavoid any of the parts of the rotary machine. In the common constructionof rotary machines, the pinion shaft sprocket is usually placed betweenthe bearings of the pinion-shaft. The pinion shaft must be fairly highso that a chain may pass around the sprocket without interfering with orengaging any parts of the'rotary machine. Another advantage of myconstruction resides in the'fact that the complete rotary machine willbe very rigid "because of a very low center of. gravity.

The locking means of my invention is very desirable as it is necessaryto lock the pinion shaft 42 from rotation during certain periods in theuse of the rotary machine.

The construction of my invention is quite simple and it is easy toinstall and simple to operate. The block 17 is accurately aligned by theengagement of the faces 18 and 22 of this block with the faces 20 and 24pf the timbers 11. The bearing supporting member is also accuratelyaligned by engagement of the faces 31 and 34 of the bearing member withthe faces 33 and 35 of the block 17.

There will positively be no, disalignment between the bearings of myinvention due to any strains placed thereupon during the operation ofthe rotary machine. This is very important as such a disalignment woulddamage some parts of the rotary inachine and cause others to quicklywear away. I accomplish this important consideration of my invention byproviding a unitary bearing supporting member for supporting thebearings of my invention. The bearing member 30 is ruggedly designed andis formed so that the bearings and other parts may be cheaply assembledtogether without sacrificing any ruggedness which is. very essential tothe rotary machine.

I claim as my invention:

1. In a rotary well drilling apparatus, the combination-of: a base; arotary table vertically journaled on said base; a horizontally disposedself-contained pinion-shaft unit aligned radially with the axis of saidtable, said unit comprising a unitary hearing support engaging inopposed parallel ways in said base and having two relatively spacedbearing housings, bearing in said housings,

a pinion-shaft journaled in said bearings and a plHlOIl secured on" thelnner end of said shaft and in driving connection with said table; andmeans for detachably securing said unit in position in said ways.

2. In a rotary well drilling apparatus, the combination of: a base; arotary table vertically journaled on said base; a horizontally disposedself-contained pinion-shaft unit aligned radially with the axis of saidtable,

said unit comprising a unitary bearing supin opposed parallel ways 1nsaid base an bearing housings, bearings 111 said houslngs,

a. pinion-shaft journaled in said bearings, and a pinion secured on theinner end of said shaft and in driving connection with said table; meansfor detachably securing said unit in position in said ways; and meansfor locking the pinion-shaft against rotation. v

3. In a rotary well drilling apparatus, the combination off a base; arotary table vertically journaled on said base; a horizontally disposedself-contained pinion-shaft unit aligned radially with the axis of saidtable, said unit comprising a unitary bearingsupport engaging in opposedparallel ways in said base and having two relatively spaced bearinghousings, hearings in said housings, a pinion-shaft journaled .in saidbearings, abutment means secured to said shaft between-said bearings,and a pinion secured on the inner end of said shaftand in drivingconnection with said table; means for detachahly securing said unit inposition in combination of: a base; a rotary table vertically journaledon said base; a horizontall v disposed self-contained pinion-shaft unitaligned radially with the axis of said table, said unit comprising aunitary bearing support engaging in opposed parallel ways in said baseand having two relatively spaced hearing housings, bearings in saidhousings, a pinion-shaft journaled in said bearings, and a pinionsecured on the inner end of said shaft and in driving connection withsaid table: means for detachably securing said unit in position in saidways; and a driving means secured to the outer free end of said. shaft.

- In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 1st day of July, 1925.

EDWIN w. GOESER.

